V

vintage computing

TRS-80 Model I/III/4/4P emulator SDLTRS/SDL2TRS focused on EACA, Prologica, TCS and other systems

A system to analyze the address, data and control signals of an 8 bit CPU such as an i8080. Allows one to trace bus cycles and single step. Uses an STM32H7 nucleo board.

Schematic capture of my interface board to adapt a commercial DRAM card's bus to my custom S44 bus on my 8080 computer.

A PCB rebuild of my hand wired computer backplane bus I originally designed and built in 1980.

Building a serial terminal with a real cathode-ray tube (CRT) in 2023.

Tiny Pascal compiler source from the Byte Book of Pascal along with side implementations for a couple of specific models.

An unpacked copy of the code libraries developed in the text Software Tools in Pascal.

My hand wired computer system SRAM board I originally designed and built in 1980.

My hand wired computer system 8080 CPU board I originally designed and built in 1980.

Symbols and footprints for (obscure) vintage components such as HD6445, R6501, MCS6502 and others.